Chicago Marathon
· starts 7:30 AM
Chicago, IL
Chicago Marathon is a road race of 26.2 miles (42 km) in Chicago, Illinois. The next edition is on Sunday, October 10, 2027, starting at 7:30 AM. The race gives its climbing as 243 ft (74 m); measured from its course file, it's 20 ft (6 m). It starts at 602 ft (184 m) above sea level. Its high point is 602 ft (184 m). The course runs point to point. It's one of the Abbott World Marathon Majors. Entry is by lottery; registration opened on October 21, 2025. The field is about 45,000 runners.
There are 17 other upcoming marathons in Illinois. Chicago Marathon climbs about 9 ft a mile (2 m per km), flatter than 80% of the 476 marathons listed with their climbing.
The course
Questions about Chicago Marathon
When is Chicago Marathon 2027?
Chicago Marathon 2027 is on Sunday, October 10, 2027, starting at 7:30 AM local time.
Where is Chicago Marathon?
Chicago Marathon is held in Chicago, Illinois.
How long is Chicago Marathon?
Chicago Marathon is 26.2 miles (42 km).
How much elevation gain does Chicago Marathon have?
Chicago Marathon has 243 ft (74 m) of elevation gain, as the race states it.
How do you get into Chicago Marathon?
Entry to Chicago Marathon is by lottery. Registration opened on October 21, 2025.
What is the weather usually like at Chicago Marathon?
Around Chicago Marathon's date, the day's high is typically about 65°F (18°C) and the low about 51°F (11°C), averaged over recent years.
Where can I see the Chicago Marathon elevation profile and aid station cutoffs?
runfarwhere has Chicago Marathon's course file. The outline, distance and climbing are free on its page; the elevation profile, aid stations with cutoffs and the GPX file are part of runfarwhere Premium.
How hilly is Chicago Marathon?
Chicago Marathon climbs about 9 ft a mile (2 m per km), flatter than 80% of the 476 marathons listed with their climbing.
What other marathons are there in Illinois?
Other upcoming marathons in Illinois include Tunnel Hill 100 (November 14, 2026), Cactus Classic Trail Races (March 6, 2027) and The Piasa (March 27, 2027).
Other races in Illinois
- Belleville Main Street Marathon Marathon · Sep 2027, TBD
- Quad Cities Marathon Marathon · Sep 2027, TBD
- Des Plaines River Trail Marathon Marathon · Oct 9, 2027
- Shake Your Trail Feather Trail Run 16 Mile · Oct 2027, TBD
- Fancy Nonsense 25k/50k 25K · Oct 23, 2027
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